Numerical simulation research on heat transfer in particle flow round tubes

被引：0

作者：

Yu Q.-B. ^{[1
]}

Peng J.-Y. ^{[1
]}

Ren H.-L. ^{[1
]}

Liu J.-X. ^{[1
]}

机构：

[1] School of Metallurgy, Northeastern University, Shenyang

来源：

Dongbei Daxue Xuebao/Journal of Northeastern University | 2016年 / 37卷 / 05期

关键词：

Gravity bed waste heat boiler; Heat transfer; Numerical simulation; Particle flow; Round tube;

D O I：

10.3969/j.issn.1005-3026.2016.05.012

中图分类号：

学科分类号：

摘要：

At present, air is a commonly-used heat transfer medium to recover waste heat of slag particles in blast furnace (BF) after dry granulation, which has a low thermal efficiency owing to its low specific heat capacity. Therefore, using gravity bed waste heat boiler to recover waste heat in the high temperature BF slag particles was proposed. Considering the particles as continuous viscous flow, a three dimensional numerical model was built to simulate the heat transfer of BF slag particles flowing around tubes based on the CFD software of Fluent. The effects of the inlet velocity of particles and water, and the inlet temperature of water on the efficiency of heat exchanging in waste heat boiler were investigated. The simulation results show that the efficiency of heat transfer improves with increasing the inlet velocity of particles and water, and the heat recovery rate of the former drops. However, when the inlet temperature of water increases, the heat transfer coefficient keeps invariant and the heat recovery rate reduces. © 2016, Editorial Department of Journal of Northeastern University. All right reserved.

引用

页码：663 / 667

页数：4

共 12 条

[1]

Barati M., Esfahani S., Utigard T.A., Energy recovery from high temperature slags, General Information, 36, 9, pp. 5440-5449, (2011)

[2]

Liu J., Yu Q., Duan W., Et al., Experimental investigation on ligament formation for molten slag granulation, Applied Thermal Engineering, 73, pp. 888-893, (2014)

[3]

Liu J.-X., Yu Q.-B., Xie H.-Q., Et al., Experimental study on waste heat recovery for metallurgical slag particles, Journal of Northeastern University (Natural Science), 35, 2, pp. 245-248, (2014)

[4]

Campbell C.S., Rapid granular flows, Annual Review of Fluid Mechanics, 22, 2, pp. 57-90, (2003)

[5]

Chen J., Akiyama T., Nogami H., Et al., Modeling of solid flow in moving beds, ISIJ International, 33, 6, pp. 664-671, (1993)

[6]

Natarajan V.V.R., Hunt M.L., Heat transfer in vertical granular flows, Experimental Heat Transfer, 10, 2, pp. 89-107, (1997)

[7]

Wu J.-T., Chen J.-Z., Yang Y.-R., Model of contact heat transfer in granular moving bed, Journal of Chemical Industry and Engineering, 57, 4, pp. 719-725, (2006)

[8]

Hiromi T., Particles flow pattern around tube and local in moving heat transfer bed, AIChE Journal, 42, 6, pp. 1621-1626, (1996)

[9]

Yusuf R., Halvorsen B., Melaaen M.C., Eulerian-Eulerian simulation of heat transfer between a gas - solid fluidized bed and an immersed tube-bank with horizontal tubes, Chemical Engineering Science, 66, 8, pp. 1550-1564, (2011)

[10]

Dan C., Wachs A., Direct numerical simulation of particulate flow with heat transfer, International Journal of Heat and Fluid Flow, 31, 6, pp. 1050-1057, (2010)

← 1 2 →